I recently had a need to deploy an OVA using ovftool on a Windows desktop and I ran into the following error:
Error: Could not lookup host: root
Since the environment I was deploying to did not have DNS, the failed hostname lookup was expected. This was pretty annoying with previous releases of ovftool but it looks like with the latest 4.0 version, there is a new advanced option called --X:disableHostnameResolve that would allow you to disable this check. Using the new version of ovftool and the advanced option, I was able to bypass the check and deploy the OVA.